//---------------------------------------------------------------------
// QRCode for JavaScript
//
// Copyright (c) 2009 Kazuhiko Arase
//
// URL: http://www.d-project.com/
//
// Licensed under the MIT license:
//   http://www.opensource.org/licenses/mit-license.php
//
// The word "QR Code" is registered trademark of 
// DENSO WAVE INCORPORATED
//   http://www.denso-wave.com/qrcode/faqpatent-e.html
//
//---------------------------------------------------------------------

//---------------------------------------------------------------------
// QR8bitByte
//---------------------------------------------------------------------

function QR8bitByte(data) {
 this.mode = QRMode.MODE_8BIT_BYTE;
 this.data = data;
}

QR8bitByte.prototype = {

 getLength : function(buffer) {
  return this.data.length;
 },
 
 write : function(buffer) {
  for (var i = 0; i < this.data.length; i++) {
   // not JIS ...
   buffer.put(this.data.charCodeAt(i), 8);
  }
 }
};

//---------------------------------------------------------------------
// QRCode
//---------------------------------------------------------------------

function QRCode(typeNumber, errorCorrectLevel) {
 this.typeNumber = typeNumber;
 this.errorCorrectLevel = errorCorrectLevel;
 this.modules = null;
 this.moduleCount = 0;
 this.dataCache = null;
 this.dataList = new Array();
}

QRCode.prototype = {
 
 addData : function(data) {
  var newData = new QR8bitByte(data);
  this.dataList.push(newData);
  this.dataCache = null;
 },
 
 isDark : function(row, col) {
  if (row < 0 || this.moduleCount <= row || col < 0 || this.moduleCount <= col) {
   throw new Error(row + "," + col);
  }
  return this.modules[row][col];
 },

 getModuleCount : function() {
  return this.moduleCount;
 },
 
 make : function() {
  // Calculate automatically typeNumber if provided is < 1
  if (this.typeNumber < 1 ){
   var typeNumber = 1;
   for (typeNumber = 1; typeNumber < 40; typeNumber++) {
    var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, this.errorCorrectLevel);

    var buffer = new QRBitBuffer();
    var totalDataCount = 0;
    for (var i = 0; i < rsBlocks.length; i++) {
     totalDataCount += rsBlocks[i].dataCount;
    }

    for (var i = 0; i < this.dataList.length; i++) {
     var data = this.dataList[i];
     buffer.put(data.mode, 4);
     buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber) );
     data.write(buffer);
    }
    if (buffer.getLengthInBits() <= totalDataCount * 8)
     break;
   }
   this.typeNumber = typeNumber;
  }
  this.makeImpl(false, this.getBestMaskPattern() );
 },
 
 makeImpl : function(test, maskPattern) {
  
  this.moduleCount = this.typeNumber * 4 + 17;
  this.modules = new Array(this.moduleCount);
  
  for (var row = 0; row < this.moduleCount; row++) {
   
   this.modules[row] = new Array(this.moduleCount);
   
   for (var col = 0; col < this.moduleCount; col++) {
    this.modules[row][col] = null;//(col + row) % 3;
   }
  }
 
  this.setupPositionProbePattern(0, 0);
  this.setupPositionProbePattern(this.moduleCount - 7, 0);
  this.setupPositionProbePattern(0, this.moduleCount - 7);
  this.setupPositionAdjustPattern();
  this.setupTimingPattern();
  this.setupTypeInfo(test, maskPattern);
  
  if (this.typeNumber >= 7) {
   this.setupTypeNumber(test);
  }
 
  if (this.dataCache == null) {
   this.dataCache = QRCode.createData(this.typeNumber, this.errorCorrectLevel, this.dataList);
  }
 
  this.mapData(this.dataCache, maskPattern);
 },

 setupPositionProbePattern : function(row, col)  {
  
  for (var r = -1; r <= 7; r++) {
   
   if (row + r <= -1 || this.moduleCount <= row + r) continue;
   
   for (var c = -1; c <= 7; c++) {
    
    if (col + c <= -1 || this.moduleCount <= col + c) continue;
    
    if ( (0 <= r && r <= 6 && (c == 0 || c == 6) )
      || (0 <= c && c <= 6 && (r == 0 || r == 6) )
      || (2 <= r && r <= 4 && 2 <= c && c <= 4) ) {
     this.modules[row + r][col + c] = true;
    } else {
     this.modules[row + r][col + c] = false;
    }
   }  
  }  
 },
 
 getBestMaskPattern : function() {
 
  var minLostPoint = 0;
  var pattern = 0;
 
  for (var i = 0; i < 8; i++) {
   
   this.makeImpl(true, i);
 
   var lostPoint = QRUtil.getLostPoint(this);
 
   if (i == 0 || minLostPoint >  lostPoint) {
    minLostPoint = lostPoint;
    pattern = i;
   }
  }
 
  return pattern;
 },
 
 createMovieClip : function(target_mc, instance_name, depth) {
 
  var qr_mc = target_mc.createEmptyMovieClip(instance_name, depth);
  var cs = 1;
 
  this.make();

  for (var row = 0; row < this.modules.length; row++) {
   
   var y = row * cs;
   
   for (var col = 0; col < this.modules[row].length; col++) {
 
    var x = col * cs;
    var dark = this.modules[row][col];
   
    if (dark) {
     qr_mc.beginFill(0, 100);
     qr_mc.moveTo(x, y);
     qr_mc.lineTo(x + cs, y);
     qr_mc.lineTo(x + cs, y + cs);
     qr_mc.lineTo(x, y + cs);
     qr_mc.endFill();
    }
   }
  }
  
  return qr_mc;
 },

 setupTimingPattern : function() {
  
  for (var r = 8; r < this.moduleCount - 8; r++) {
   if (this.modules[r][6] != null) {
    continue;
   }
   this.modules[r][6] = (r % 2 == 0);
  }
 
  for (var c = 8; c < this.moduleCount - 8; c++) {
   if (this.modules[6][c] != null) {
    continue;
   }
   this.modules[6][c] = (c % 2 == 0);
  }
 },
 
 setupPositionAdjustPattern : function() {
 
  var pos = QRUtil.getPatternPosition(this.typeNumber);
  
  for (var i = 0; i < pos.length; i++) {
  
   for (var j = 0; j < pos.length; j++) {
   
    var row = pos[i];
    var col = pos[j];
    
    if (this.modules[row][col] != null) {
     continue;
    }
    
    for (var r = -2; r <= 2; r++) {
    
     for (var c = -2; c <= 2; c++) {
     
      if (r == -2 || r == 2 || c == -2 || c == 2 
        || (r == 0 && c == 0) ) {
       this.modules[row + r][col + c] = true;
      } else {
       this.modules[row + r][col + c] = false;
      }
     }
    }
   }
  }
 },
 
 setupTypeNumber : function(test) {
 
  var bits = QRUtil.getBCHTypeNumber(this.typeNumber);
 
  for (var i = 0; i < 18; i++) {
   var mod = (!test && ( (bits >> i) & 1) == 1);
   this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = mod;
  }
 
  for (var i = 0; i < 18; i++) {
   var mod = (!test && ( (bits >> i) & 1) == 1);
   this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
  }
 },
 
 setupTypeInfo : function(test, maskPattern) {
 
  var data = (this.errorCorrectLevel << 3) | maskPattern;
  var bits = QRUtil.getBCHTypeInfo(data);
 
  // vertical  
  for (var i = 0; i < 15; i++) {
 
   var mod = (!test && ( (bits >> i) & 1) == 1);
 
   if (i < 6) {
    this.modules[i][8] = mod;
   } else if (i < 8) {
    this.modules[i + 1][8] = mod;
   } else {
    this.modules[this.moduleCount - 15 + i][8] = mod;
   }
  }
 
  // horizontal
  for (var i = 0; i < 15; i++) {
 
   var mod = (!test && ( (bits >> i) & 1) == 1);
   
   if (i < 8) {
    this.modules[8][this.moduleCount - i - 1] = mod;
   } else if (i < 9) {
    this.modules[8][15 - i - 1 + 1] = mod;
   } else {
    this.modules[8][15 - i - 1] = mod;
   }
  }
 
  // fixed module
  this.modules[this.moduleCount - 8][8] = (!test);
 
 },
 
 mapData : function(data, maskPattern) {
  
  var inc = -1;
  var row = this.moduleCount - 1;
  var bitIndex = 7;
  var byteIndex = 0;
  
  for (var col = this.moduleCount - 1; col > 0; col -= 2) {
 
   if (col == 6) col--;
 
   while (true) {
 
    for (var c = 0; c < 2; c++) {
     
     if (this.modules[row][col - c] == null) {
      
      var dark = false;
 
      if (byteIndex < data.length) {
       dark = ( ( (data[byteIndex] >>> bitIndex) & 1) == 1);
      }
 
      var mask = QRUtil.getMask(maskPattern, row, col - c);
 
      if (mask) {
       dark = !dark;
      }
      
      this.modules[row][col - c] = dark;
      bitIndex--;
 
      if (bitIndex == -1) {
       byteIndex++;
       bitIndex = 7;
      }
     }
    }
        
    row += inc;
 
    if (row < 0 || this.moduleCount <= row) {
     row -= inc;
     inc = -inc;
     break;
    }
   }
  }
  
 }

};

QRCode.PAD0 = 0xEC;
QRCode.PAD1 = 0x11;

QRCode.createData = function(typeNumber, errorCorrectLevel, dataList) {
 
 var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
 
 var buffer = new QRBitBuffer();
 
 for (var i = 0; i < dataList.length; i++) {
  var data = dataList[i];
  buffer.put(data.mode, 4);
  buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber) );
  data.write(buffer);
 }

 // calc num max data.
 var totalDataCount = 0;
 for (var i = 0; i < rsBlocks.length; i++) {
  totalDataCount += rsBlocks[i].dataCount;
 }

 if (buffer.getLengthInBits() > totalDataCount * 8) {
  throw new Error("code length overflow. ("
   + buffer.getLengthInBits()
   + ">"
   +  totalDataCount * 8
   + ")");
 }

 // end code
 if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
  buffer.put(0, 4);
 }

 // padding
 while (buffer.getLengthInBits() % 8 != 0) {
  buffer.putBit(false);
 }

 // padding
 while (true) {
  
  if (buffer.getLengthInBits() >= totalDataCount * 8) {
   break;
  }
  buffer.put(QRCode.PAD0, 8);
  
  if (buffer.getLengthInBits() >= totalDataCount * 8) {
   break;
  }
  buffer.put(QRCode.PAD1, 8);
 }

 return QRCode.createBytes(buffer, rsBlocks);
}

QRCode.createBytes = function(buffer, rsBlocks) {

 var offset = 0;
 
 var maxDcCount = 0;
 var maxEcCount = 0;
 
 var dcdata = new Array(rsBlocks.length);
 var ecdata = new Array(rsBlocks.length);
 
 for (var r = 0; r < rsBlocks.length; r++) {

  var dcCount = rsBlocks[r].dataCount;
  var ecCount = rsBlocks[r].totalCount - dcCount;

  maxDcCount = Math.max(maxDcCount, dcCount);
  maxEcCount = Math.max(maxEcCount, ecCount);
  
  dcdata[r] = new Array(dcCount);
  
  for (var i = 0; i < dcdata[r].length; i++) {
   dcdata[r][i] = 0xff & buffer.buffer[i + offset];
  }
  offset += dcCount;
  
  var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
  var rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1);

  var modPoly = rawPoly.mod(rsPoly);
  ecdata[r] = new Array(rsPoly.getLength() - 1);
  for (var i = 0; i < ecdata[r].length; i++) {
            var modIndex = i + modPoly.getLength() - ecdata[r].length;
   ecdata[r][i] = (modIndex >= 0)? modPoly.get(modIndex) : 0;
  }

 }
 
 var totalCodeCount = 0;
 for (var i = 0; i < rsBlocks.length; i++) {
  totalCodeCount += rsBlocks[i].totalCount;
 }

 var data = new Array(totalCodeCount);
 var index = 0;

 for (var i = 0; i < maxDcCount; i++) {
  for (var r = 0; r < rsBlocks.length; r++) {
   if (i < dcdata[r].length) {
    data[index++] = dcdata[r][i];
   }
  }
 }

 for (var i = 0; i < maxEcCount; i++) {
  for (var r = 0; r < rsBlocks.length; r++) {
   if (i < ecdata[r].length) {
    data[index++] = ecdata[r][i];
   }
  }
 }

 return data;

}

//---------------------------------------------------------------------
// QRMode
//---------------------------------------------------------------------

var QRMode = {
 MODE_NUMBER :  1 << 0,
 MODE_ALPHA_NUM :  1 << 1,
 MODE_8BIT_BYTE :  1 << 2,
 MODE_KANJI :  1 << 3
};

//---------------------------------------------------------------------
// QRErrorCorrectLevel
//---------------------------------------------------------------------
 
var QRErrorCorrectLevel = {
 L : 1,
 M : 0,
 Q : 3,
 H : 2
};

//---------------------------------------------------------------------
// QRMaskPattern
//---------------------------------------------------------------------

var QRMaskPattern = {
 PATTERN000 : 0,
 PATTERN001 : 1,
 PATTERN010 : 2,
 PATTERN011 : 3,
 PATTERN100 : 4,
 PATTERN101 : 5,
 PATTERN110 : 6,
 PATTERN111 : 7
};

//---------------------------------------------------------------------
// QRUtil
//---------------------------------------------------------------------
 
var QRUtil = {

    PATTERN_POSITION_TABLE : [
     [],
     [6, 18],
     [6, 22],
     [6, 26],
     [6, 30],
     [6, 34],
     [6, 22, 38],
     [6, 24, 42],
     [6, 26, 46],
     [6, 28, 50],
     [6, 30, 54],  
     [6, 32, 58],
     [6, 34, 62],
     [6, 26, 46, 66],
     [6, 26, 48, 70],
     [6, 26, 50, 74],
     [6, 30, 54, 78],
     [6, 30, 56, 82],
     [6, 30, 58, 86],
     [6, 34, 62, 90],
     [6, 28, 50, 72, 94],
     [6, 26, 50, 74, 98],
     [6, 30, 54, 78, 102],
     [6, 28, 54, 80, 106],
     [6, 32, 58, 84, 110],
     [6, 30, 58, 86, 114],
     [6, 34, 62, 90, 118],
     [6, 26, 50, 74, 98, 122],
     [6, 30, 54, 78, 102, 126],
     [6, 26, 52, 78, 104, 130],
     [6, 30, 56, 82, 108, 134],
     [6, 34, 60, 86, 112, 138],
     [6, 30, 58, 86, 114, 142],
     [6, 34, 62, 90, 118, 146],
     [6, 30, 54, 78, 102, 126, 150],
     [6, 24, 50, 76, 102, 128, 154],
     [6, 28, 54, 80, 106, 132, 158],
     [6, 32, 58, 84, 110, 136, 162],
     [6, 26, 54, 82, 110, 138, 166],
     [6, 30, 58, 86, 114, 142, 170]
    ],

    G15 : (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0),
    G18 : (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0),
    G15_MASK : (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1),

    getBCHTypeInfo : function(data) {
     var d = data << 10;
     while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 0) {
      d ^= (QRUtil.G15 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) ) );  
     }
     return ( (data << 10) | d) ^ QRUtil.G15_MASK;
    },

    getBCHTypeNumber : function(data) {
     var d = data << 12;
     while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) >= 0) {
      d ^= (QRUtil.G18 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) ) );  
     }
     return (data << 12) | d;
    },

    getBCHDigit : function(data) {

     var digit = 0;

     while (data != 0) {
      digit++;
      data >>>= 1;
     }

     return digit;
    },

    getPatternPosition : function(typeNumber) {
     return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1];
    },

    getMask : function(maskPattern, i, j) {
     
     switch (maskPattern) {
      
     case QRMaskPattern.PATTERN000 : return (i + j) % 2 == 0;
     case QRMaskPattern.PATTERN001 : return i % 2 == 0;
     case QRMaskPattern.PATTERN010 : return j % 3 == 0;
     case QRMaskPattern.PATTERN011 : return (i + j) % 3 == 0;
     case QRMaskPattern.PATTERN100 : return (Math.floor(i / 2) + Math.floor(j / 3) ) % 2 == 0;
     case QRMaskPattern.PATTERN101 : return (i * j) % 2 + (i * j) % 3 == 0;
     case QRMaskPattern.PATTERN110 : return ( (i * j) % 2 + (i * j) % 3) % 2 == 0;
     case QRMaskPattern.PATTERN111 : return ( (i * j) % 3 + (i + j) % 2) % 2 == 0;

     default :
      throw new Error("bad maskPattern:" + maskPattern);
     }
    },

    getErrorCorrectPolynomial : function(errorCorrectLength) {

     var a = new QRPolynomial([1], 0);

     for (var i = 0; i < errorCorrectLength; i++) {
      a = a.multiply(new QRPolynomial([1, QRMath.gexp(i)], 0) );
     }

     return a;
    },

    getLengthInBits : function(mode, type) {

     if (1 <= type && type < 10) {

      // 1 - 9

      switch(mode) {
      case QRMode.MODE_NUMBER  : return 10;
      case QRMode.MODE_ALPHA_NUM  : return 9;
      case QRMode.MODE_8BIT_BYTE : return 8;
      case QRMode.MODE_KANJI   : return 8;
      default :
       throw new Error("mode:" + mode);
      }

     } else if (type < 27) {

      // 10 - 26

      switch(mode) {
      case QRMode.MODE_NUMBER  : return 12;
      case QRMode.MODE_ALPHA_NUM  : return 11;
      case QRMode.MODE_8BIT_BYTE : return 16;
      case QRMode.MODE_KANJI   : return 10;
      default :
       throw new Error("mode:" + mode);
      }

     } else if (type < 41) {

      // 27 - 40

      switch(mode) {
      case QRMode.MODE_NUMBER  : return 14;
      case QRMode.MODE_ALPHA_NUM : return 13;
      case QRMode.MODE_8BIT_BYTE : return 16;
      case QRMode.MODE_KANJI   : return 12;
      default :
       throw new Error("mode:" + mode);
      }

     } else {
      throw new Error("type:" + type);
     }
    },

    getLostPoint : function(qrCode) {
     
     var moduleCount = qrCode.getModuleCount();
     
     var lostPoint = 0;
     
     // LEVEL1
     
     for (var row = 0; row < moduleCount; row++) {

      for (var col = 0; col < moduleCount; col++) {

       var sameCount = 0;
       var dark = qrCode.isDark(row, col);

    for (var r = -1; r <= 1; r++) {

        if (row + r < 0 || moduleCount <= row + r) {
         continue;
        }

        for (var c = -1; c <= 1; c++) {

         if (col + c < 0 || moduleCount <= col + c) {
          continue;
         }

         if (r == 0 && c == 0) {
          continue;
         }

         if (dark == qrCode.isDark(row + r, col + c) ) {
          sameCount++;
         }
        }
       }

       if (sameCount > 5) {
        lostPoint += (3 + sameCount - 5);
       }
      }
     }

     // LEVEL2

     for (var row = 0; row < moduleCount - 1; row++) {
      for (var col = 0; col < moduleCount - 1; col++) {
       var count = 0;
       if (qrCode.isDark(row,     col    ) ) count++;
       if (qrCode.isDark(row + 1, col    ) ) count++;
       if (qrCode.isDark(row,     col + 1) ) count++;
       if (qrCode.isDark(row + 1, col + 1) ) count++;
       if (count == 0 || count == 4) {
        lostPoint += 3;
       }
      }
     }

     // LEVEL3

     for (var row = 0; row < moduleCount; row++) {
      for (var col = 0; col < moduleCount - 6; col++) {
       if (qrCode.isDark(row, col)
         && !qrCode.isDark(row, col + 1)
         &&  qrCode.isDark(row, col + 2)
         &&  qrCode.isDark(row, col + 3)
         &&  qrCode.isDark(row, col + 4)
         && !qrCode.isDark(row, col + 5)
         &&  qrCode.isDark(row, col + 6) ) {
        lostPoint += 40;
       }
      }
     }

     for (var col = 0; col < moduleCount; col++) {
      for (var row = 0; row < moduleCount - 6; row++) {
       if (qrCode.isDark(row, col)
         && !qrCode.isDark(row + 1, col)
         &&  qrCode.isDark(row + 2, col)
         &&  qrCode.isDark(row + 3, col)
         &&  qrCode.isDark(row + 4, col)
         && !qrCode.isDark(row + 5, col)
         &&  qrCode.isDark(row + 6, col) ) {
        lostPoint += 40;
       }
      }
     }

     // LEVEL4
     
     var darkCount = 0;

     for (var col = 0; col < moduleCount; col++) {
      for (var row = 0; row < moduleCount; row++) {
       if (qrCode.isDark(row, col) ) {
        darkCount++;
       }
      }
     }
     
     var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
     lostPoint += ratio * 10;

     return lostPoint;  
    }

};
 

//---------------------------------------------------------------------
// QRMath
//---------------------------------------------------------------------

var QRMath = {

 glog : function(n) {
 
  if (n < 1) {
   throw new Error("glog(" + n + ")");
  }
  
  return QRMath.LOG_TABLE[n];
 },
 
 gexp : function(n) {
 
  while (n < 0) {
   n += 255;
  }
 
  while (n >= 256) {
   n -= 255;
  }
 
  return QRMath.EXP_TABLE[n];
 },
 
 EXP_TABLE : new Array(256),
 
 LOG_TABLE : new Array(256)

};
 
for (var i = 0; i < 8; i++) {
 QRMath.EXP_TABLE[i] = 1 << i;
}
for (var i = 8; i < 256; i++) {
 QRMath.EXP_TABLE[i] = QRMath.EXP_TABLE[i - 4]
  ^ QRMath.EXP_TABLE[i - 5]
  ^ QRMath.EXP_TABLE[i - 6]
  ^ QRMath.EXP_TABLE[i - 8];
}
for (var i = 0; i < 255; i++) {
 QRMath.LOG_TABLE[QRMath.EXP_TABLE[i] ] = i;
}

//---------------------------------------------------------------------
// QRPolynomial
//---------------------------------------------------------------------

function QRPolynomial(num, shift) {

 if (num.length == undefined) {
  throw new Error(num.length + "/" + shift);
 }

 var offset = 0;

 while (offset < num.length && num[offset] == 0) {
  offset++;
 }

 this.num = new Array(num.length - offset + shift);
 for (var i = 0; i < num.length - offset; i++) {
  this.num[i] = num[i + offset];
 }
}

QRPolynomial.prototype = {

 get : function(index) {
  return this.num[index];
 },
 
 getLength : function() {
  return this.num.length;
 },
 
 multiply : function(e) {
 
  var num = new Array(this.getLength() + e.getLength() - 1);
 
  for (var i = 0; i < this.getLength(); i++) {
   for (var j = 0; j < e.getLength(); j++) {
    num[i + j] ^= QRMath.gexp(QRMath.glog(this.get(i) ) + QRMath.glog(e.get(j) ) );
   }
  }
 
  return new QRPolynomial(num, 0);
 },
 
 mod : function(e) {
 
  if (this.getLength() - e.getLength() < 0) {
   return this;
  }
 
  var ratio = QRMath.glog(this.get(0) ) - QRMath.glog(e.get(0) );
 
  var num = new Array(this.getLength() );
  
  for (var i = 0; i < this.getLength(); i++) {
   num[i] = this.get(i);
  }
  
  for (var i = 0; i < e.getLength(); i++) {
   num[i] ^= QRMath.gexp(QRMath.glog(e.get(i) ) + ratio);
  }
 
  // recursive call
  return new QRPolynomial(num, 0).mod(e);
 }
};

//---------------------------------------------------------------------
// QRRSBlock
//---------------------------------------------------------------------

function QRRSBlock(totalCount, dataCount) {
 this.totalCount = totalCount;
 this.dataCount  = dataCount;
}

QRRSBlock.RS_BLOCK_TABLE = [

 // L
 // M
 // Q
 // H

 // 1
 [1, 26, 19],
 [1, 26, 16],
 [1, 26, 13],
 [1, 26, 9],
 
 // 2
 [1, 44, 34],
 [1, 44, 28],
 [1, 44, 22],
 [1, 44, 16],

 // 3
 [1, 70, 55],
 [1, 70, 44],
 [2, 35, 17],
 [2, 35, 13],

 // 4  
 [1, 100, 80],
 [2, 50, 32],
 [2, 50, 24],
 [4, 25, 9],
 
 // 5
 [1, 134, 108],
 [2, 67, 43],
 [2, 33, 15, 2, 34, 16],
 [2, 33, 11, 2, 34, 12],
 
 // 6
 [2, 86, 68],
 [4, 43, 27],
 [4, 43, 19],
 [4, 43, 15],
 
 // 7  
 [2, 98, 78],
 [4, 49, 31],
 [2, 32, 14, 4, 33, 15],
 [4, 39, 13, 1, 40, 14],
 
 // 8
 [2, 121, 97],
 [2, 60, 38, 2, 61, 39],
 [4, 40, 18, 2, 41, 19],
 [4, 40, 14, 2, 41, 15],
 
 // 9
 [2, 146, 116],
 [3, 58, 36, 2, 59, 37],
 [4, 36, 16, 4, 37, 17],
 [4, 36, 12, 4, 37, 13],
 
 // 10  
 [2, 86, 68, 2, 87, 69],
 [4, 69, 43, 1, 70, 44],
 [6, 43, 19, 2, 44, 20],
 [6, 43, 15, 2, 44, 16],

 // 11
 [4, 101, 81],
 [1, 80, 50, 4, 81, 51],
 [4, 50, 22, 4, 51, 23],
 [3, 36, 12, 8, 37, 13],

 // 12
 [2, 116, 92, 2, 117, 93],
 [6, 58, 36, 2, 59, 37],
 [4, 46, 20, 6, 47, 21],
 [7, 42, 14, 4, 43, 15],

 // 13
 [4, 133, 107],
 [8, 59, 37, 1, 60, 38],
 [8, 44, 20, 4, 45, 21],
 [12, 33, 11, 4, 34, 12],

 // 14
 [3, 145, 115, 1, 146, 116],
 [4, 64, 40, 5, 65, 41],
 [11, 36, 16, 5, 37, 17],
 [11, 36, 12, 5, 37, 13],

 // 15
 [5, 109, 87, 1, 110, 88],
 [5, 65, 41, 5, 66, 42],
 [5, 54, 24, 7, 55, 25],
 [11, 36, 12],

 // 16
 [5, 122, 98, 1, 123, 99],
 [7, 73, 45, 3, 74, 46],
 [15, 43, 19, 2, 44, 20],
 [3, 45, 15, 13, 46, 16],

 // 17
 [1, 135, 107, 5, 136, 108],
 [10, 74, 46, 1, 75, 47],
 [1, 50, 22, 15, 51, 23],
 [2, 42, 14, 17, 43, 15],

 // 18
 [5, 150, 120, 1, 151, 121],
 [9, 69, 43, 4, 70, 44],
 [17, 50, 22, 1, 51, 23],
 [2, 42, 14, 19, 43, 15],

 // 19
 [3, 141, 113, 4, 142, 114],
 [3, 70, 44, 11, 71, 45],
 [17, 47, 21, 4, 48, 22],
 [9, 39, 13, 16, 40, 14],

 // 20
 [3, 135, 107, 5, 136, 108],
 [3, 67, 41, 13, 68, 42],
 [15, 54, 24, 5, 55, 25],
 [15, 43, 15, 10, 44, 16],

 // 21
 [4, 144, 116, 4, 145, 117],
 [17, 68, 42],
 [17, 50, 22, 6, 51, 23],
 [19, 46, 16, 6, 47, 17],

 // 22
 [2, 139, 111, 7, 140, 112],
 [17, 74, 46],
 [7, 54, 24, 16, 55, 25],
 [34, 37, 13],

 // 23
 [4, 151, 121, 5, 152, 122],
 [4, 75, 47, 14, 76, 48],
 [11, 54, 24, 14, 55, 25],
 [16, 45, 15, 14, 46, 16],

 // 24
 [6, 147, 117, 4, 148, 118],
 [6, 73, 45, 14, 74, 46],
 [11, 54, 24, 16, 55, 25],
 [30, 46, 16, 2, 47, 17],

 // 25
 [8, 132, 106, 4, 133, 107],
 [8, 75, 47, 13, 76, 48],
 [7, 54, 24, 22, 55, 25],
 [22, 45, 15, 13, 46, 16],

 // 26
 [10, 142, 114, 2, 143, 115],
 [19, 74, 46, 4, 75, 47],
 [28, 50, 22, 6, 51, 23],
 [33, 46, 16, 4, 47, 17],

 // 27
 [8, 152, 122, 4, 153, 123],
 [22, 73, 45, 3, 74, 46],
 [8, 53, 23, 26, 54, 24],
 [12, 45, 15, 28, 46, 16],

 // 28
 [3, 147, 117, 10, 148, 118],
 [3, 73, 45, 23, 74, 46],
 [4, 54, 24, 31, 55, 25],
 [11, 45, 15, 31, 46, 16],

 // 29
 [7, 146, 116, 7, 147, 117],
 [21, 73, 45, 7, 74, 46],
 [1, 53, 23, 37, 54, 24],
 [19, 45, 15, 26, 46, 16],

 // 30
 [5, 145, 115, 10, 146, 116],
 [19, 75, 47, 10, 76, 48],
 [15, 54, 24, 25, 55, 25],
 [23, 45, 15, 25, 46, 16],

 // 31
 [13, 145, 115, 3, 146, 116],
 [2, 74, 46, 29, 75, 47],
 [42, 54, 24, 1, 55, 25],
 [23, 45, 15, 28, 46, 16],

 // 32
 [17, 145, 115],
 [10, 74, 46, 23, 75, 47],
 [10, 54, 24, 35, 55, 25],
 [19, 45, 15, 35, 46, 16],

 // 33
 [17, 145, 115, 1, 146, 116],
 [14, 74, 46, 21, 75, 47],
 [29, 54, 24, 19, 55, 25],
 [11, 45, 15, 46, 46, 16],

 // 34
 [13, 145, 115, 6, 146, 116],
 [14, 74, 46, 23, 75, 47],
 [44, 54, 24, 7, 55, 25],
 [59, 46, 16, 1, 47, 17],

 // 35
 [12, 151, 121, 7, 152, 122],
 [12, 75, 47, 26, 76, 48],
 [39, 54, 24, 14, 55, 25],
 [22, 45, 15, 41, 46, 16],

 // 36
 [6, 151, 121, 14, 152, 122],
 [6, 75, 47, 34, 76, 48],
 [46, 54, 24, 10, 55, 25],
 [2, 45, 15, 64, 46, 16],

 // 37
 [17, 152, 122, 4, 153, 123],
 [29, 74, 46, 14, 75, 47],
 [49, 54, 24, 10, 55, 25],
 [24, 45, 15, 46, 46, 16],

 // 38
 [4, 152, 122, 18, 153, 123],
 [13, 74, 46, 32, 75, 47],
 [48, 54, 24, 14, 55, 25],
 [42, 45, 15, 32, 46, 16],

 // 39
 [20, 147, 117, 4, 148, 118],
 [40, 75, 47, 7, 76, 48],
 [43, 54, 24, 22, 55, 25],
 [10, 45, 15, 67, 46, 16],

 // 40
 [19, 148, 118, 6, 149, 119],
 [18, 75, 47, 31, 76, 48],
 [34, 54, 24, 34, 55, 25],
 [20, 45, 15, 61, 46, 16]
];

QRRSBlock.getRSBlocks = function(typeNumber, errorCorrectLevel) {
 
 var rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);
 
 if (rsBlock == undefined) {
  throw new Error("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel);
 }

 var length = rsBlock.length / 3;
 
 var list = new Array();
 
 for (var i = 0; i < length; i++) {

  var count = rsBlock[i * 3 + 0];
  var totalCount = rsBlock[i * 3 + 1];
  var dataCount  = rsBlock[i * 3 + 2];

  for (var j = 0; j < count; j++) {
   list.push(new QRRSBlock(totalCount, dataCount) ); 
  }
 }
 
 return list;
}

QRRSBlock.getRsBlockTable = function(typeNumber, errorCorrectLevel) {

 switch(errorCorrectLevel) {
 case QRErrorCorrectLevel.L :
  return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
 case QRErrorCorrectLevel.M :
  return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
 case QRErrorCorrectLevel.Q :
  return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
 case QRErrorCorrectLevel.H :
  return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
 default :
  return undefined;
 }
}

//---------------------------------------------------------------------
// QRBitBuffer
//---------------------------------------------------------------------

function QRBitBuffer() {
 this.buffer = new Array();
 this.length = 0;
}

QRBitBuffer.prototype = {

 get : function(index) {
  var bufIndex = Math.floor(index / 8);
  return ( (this.buffer[bufIndex] >>> (7 - index % 8) ) & 1) == 1;
 },
 
 put : function(num, length) {
  for (var i = 0; i < length; i++) {
   this.putBit( ( (num >>> (length - i - 1) ) & 1) == 1);
  }
 },
 
 getLengthInBits : function() {
  return this.length;
 },
 
 putBit : function(bit) {
 
  var bufIndex = Math.floor(this.length / 8);
  if (this.buffer.length <= bufIndex) {
   this.buffer.push(0);
  }
 
  if (bit) {
   this.buffer[bufIndex] |= (0x80 >>> (this.length % 8) );
  }
 
  this.length++;
 }
};